期刊
ECOLOGICAL MODELLING
卷 431, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.ecolmodel.2020.109196
关键词
Gironde estuary; Solea solea; DEB model; TK model; CB153; PFOS; sensitivity analysis
类别
资金
- French National Research Agency (ANR) [ANR-10-LABX-45]
- Seine Aval program SA6
- Irstea
- Ifremer
- AEAG (Agence de l'Eau Adour-Garonne)
- SMIDDEST (Syndicat Mixte pour le Developpement Durable de l'ESTuaire de la Gironde)
- SMEAG (Syndicat Mixte d'Etudes et d'Amenagement de la Garonne)
- EPIDOR (Etablissement Public Interdepartemental de la Dordogne)
- EDF
- GPMB (Grand Port Maritime de Bordeaux)
- Bordeaux Metropole
- Conseil Regional Aquitaine
- Conseil Departemental de Gironde [CD33]
- CNRS
- INRAE
- Universite de Bordeaux
The amount of potentially toxic chemicals in a fish depends on various environmental factors, such as temperature and feeding ecology, which can be affected by Global Changes (GC). The main objective of the present work was to study the relative influence of temperature, food quality and food availability on the growth and contamination of juveniles of common sole (Solea solea), a marine flatfish species known to be a relevant indicator of the nursery quality. It focuses on two Persistent Organic Pollutants (CB153 and L-PFOS) of legacy and emerging concern, respectively. To achieve this, we used a toxicokinetic (TK) model in which toxicant flows are mechanistically predicted using a bioenergetic model based on the Dynamic Energy Budget (DEB) theory. This modelling framework was applied to juvenile sole from the Gironde estuary (SW France) and allows accounting for the influence of environmental conditions on fish biological processes involved in toxicant fluxes. To compare their respective influence on model predictions of age, length, and contamination at puberty, we included in a global sensitivity analysis: (1) environmental variability gathered from literature for this particular estuary and (2) TK parameters (i.e. assimilation efficiency AE and elimination rate (k) over dot(e)) variability and uncertainty gathered from literature about each contaminant but for different fish species and experimental conditions. Then, model predictions were confronted to fish contamination measurements from the Gironde Estuary with different combinations of TK parameter values from literature. Results highlighted a key role of diet composition on fish contamination and growth while water temperature only affected growth. It stressed the need to focus on GC impact on benthic communities and their consequences on juvenile fish diet for future work on GC scenarios. Furthermore, for both chemical, the range of variability of TK parameters from experiments led to underestimated fish contaminations. The best model fits were obtained using TK parameter values from model applications: from Mounier et al. for CB153 (Solea solea, experiment, AE= 0.8 and =0 d(-1)) and from de Vos et al. (2008) for PFOS (food chain of the Western Scheldt estuary, The Netherlands, AE = 0.8 and (k) over dot(e)=0.8 10(-2) d(-1)).
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据